Abstract

In this work, the magnetic properties of silicon nanotubes (SiNTs) filled with Fe3O4 nanoparticles (NPs) are investigated. SiNTs with different wall thicknesses of 10
and 70 nm and an inner diameter of approximately 50 nm are prepared and filled with
superparamagnetic iron oxide nanoparticles of 4 and 10 nm in diameter. The infiltration
process of the NPs into the tubes and dependence on the wall-thickness is described.
Furthermore, data from magnetization measurements of the nanocomposite systems are
analyzed in terms of iron oxide nanoparticle size dependence. Such biocompatible nanocomposites
have potential merit in the field of magnetically guided drug delivery vehicles.